Lighting apparatus of a helicopter deck

Abstract

The disclosure relates to a lighting apparatus of a helicopter deck, which is meant especially while being installed in connection with an identification marking, such as an H, triangle, cross figure or the like, and/or a touchdown and positioning mark ring on a landing and takeoff area of the helicopter deck for illuminating the safety marking/markings in question in order to make more efficient observing thereof from the air. The lighting apparatus includes of light units formed of one or more lamps and being operable by power supply transmitted from a power source in connection with the helicopter deck, wherein the light units are coupled essentially immovably in connection with an upper surface of the helicopter deck. Light units of the lighting apparatus are coupled in connection with the upper surface of the helicopter deck by means of a horizontal fastening arrangement in order to keep the light units in place by means of fastening means, being in connection therewith in a manner transmitting power essentially in a direction parallel with a plane of the helicopter deck.

The invention claimed is: 
     
       1. Lighting apparatus of a helicopter deck, being installed in connection with an identification marking, on a landing and takeoff area of the helicopter deck for illuminating the safety marking/markings in question in order to make more efficient observing thereof from the air, wherein the lighting apparatus comprises light units formed of one or more lamps and being operable by power supply transmitted from a power source in connection with the helicopter deck, wherein the light units are coupled essentially immovably in connection with an upper surface of the helicopter deck wherein, the light units of the lighting apparatus are coupled in connection with the upper surface of the helicopter deck by means of a horizontal fastening arrangement in order to keep the light units in place by means of fastening means, being in connection therewith in a manner transmitting power essentially in a direction parallel with a plane of the helicopter deck and being supported at outer edges of the helicopter deck, the lighting apparatus comprises light units surrounding the identification marking when the lighting apparatus is installed in connection with the identification marking and light units being arranged as a circle at the center of the touchdown and positioning mark ring when the lighting apparatus is installed in connection with the touchdown and positioning mark ring, and, wherein the helicopter deck is provided with a friction net that covers at least the landing and takeoff area, that is at least partly made of synthetic material in order to enable keeping its shape and dimensions and that is supported at outer edges of the helicopter deck, wherein, the light units of the lighting apparatus are coupled by mechanical fastening means in connection with the friction net. 
     
     
       2. Lighting apparatus according to  claim 1 , wherein, the light units of the lighting apparatus are coupled within one or more successively, adjacently and/or diagonally with respect to each other existing eyes of the net. 
     
     
       3. Lighting apparatus according to  claim 1  wherein, at least two of the lamps are coupled within successively, adjacently and/or diagonally with respect to each other, existing eyes of the friction net are arranged as a structurally uniform light unit by means of a coupling arrangement connecting the eyes mechanically. 
     
     
       4. Lighting apparatus according to  claim 1 , wherein, the light unit in net eyes of the friction net, having a size of eyes ˜200 mm×200 mm, comprises one or several lamps coupled with other lamps structurally and/or electrically and are operable by means of a common power supply. 
     
     
       5. Lighting apparatus according to  claim 1 , wherein, the supporting in place of the light units is arranged by means of the friction net, which comprises a woven flat band, which has lead-through openings at a constant distance from other lead-through openings in a longitudinal direction and going in a crosswise direction through the layers on top of each other of the flat band, wherein the friction net has an essentially constant measured eye size.